Synchronous communication scenario

Hi
I have a current scenario involving a SRM system sending purchase orders to an external supplier through XI 2.0 ( XI-A ). The supplier systems responds synchronously to the PO that it receives with an acknowledgement code. This acknowledgement code is interpreted back in the SRM system and suitable action is taken. End-to-End synchronous communication.
Now, we have an initiative of uprgrading the SRM systems and the XI systems. ( XI moving to 3.0 SP13 ( XI-B) ). Since we are doing this upgrade in phases, we will have phases of the project wherein the same external supplier system will receive Pos from both the SRM systems ( old and new )- i.e the supplier will receive POs from both XI-A and XI-B. The question now is :
1) Since the communication is synchronous, the supplier system need not know where/which system the PO is coming from - it just needs to reponse to the incoming PO request and send the response - back to where the request came from - my assumption is that - the communication pipeline is opened with the request coming in - so the supplier system need not mention any URL to where their response should go to. The response would automatically use the same communication pipeline opened up the request and go back to the XI box where the request came from Is my assumption right ?
2) If not, any suggestions on how we could route the response back from the supplier to the appropriate XI box ??
Thanks in advance for your valuable suggestions regarding this.

Hi Vijay,
   If at all you have uploded wsdl file for the webservice you no need to create data types for the same even for the same as RFC also.
     Create message mapping and drag the wsdl file which you have imported as External Definiations and there you will be having request and response parameters..Do the mapping accordingly(according to your requirement).
Mapping like:
    Wsdl(Request)---->RFC (Input parametrs)
    RFC (out parameters)------>wsdl(Response)
Create message interface with Synchronous for outbound
    No need of DT,MT if at all if you import the wsdl file.
   Hope i am clear.
Please let me know if you have any queries..!
Thanks and Regards,
Chandu.
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Hi,
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Hi Vijay,
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Please let me know if you have any queries..!
Thanks and Regards,
Chandu.
null
null

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